<template>
  <ul class="todo-list">
    <!-- completed: 完成的类名 -->
    <li
      :class="{completed: obj.isDone}"
      v-for='(obj,index) in arr'
      :key="obj.id"
    >
      <div class="view">
        <input
          class="toggle"
          type="checkbox"
          v-model="obj.isDone"
        />
        <label>{{ obj.name}}</label>
        <button
          class="destroy"
          @click="delFn(index)"
        ></button>
      </div>
    </li>
  </ul>

</template>

<script>
export default {
  props: ['arr'],
  methods: {
    delFn (index) {
      this.$emit('del', index)
    }
  }
}


</script>